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本帖最后由 Heaven_1 于 2022-4-28 17:21 编辑
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高速信号设计Guidelines
( U, b2 t, g3 D& n$ iTheoretical Overview
+ d+ J% A4 f2 ?Some basic understanding is desirable to effectively use the PCB design rules given in this document. It is
) c5 Y+ g0 o2 W+ x$ ?% Qthen easy to identify the undesirable effects that can arise and how to avoid them. The reason PCB layout
* ?$ C' z4 A& x) o$ L+ Ibecomes more and more important is because of the trend to faster, higher integrated, smaller form
9 p0 W7 Y7 T, S: S2 E6 Wfactors, and lower power electronic circuits. The higher the switching frequencies are, the more radiation
' R( E0 I" @! H, v: n: m6 ]$ J- boccurs on a PCB. With good layout, many EMI problems can be minimized to meet the required7 f# P6 q* }1 ?2 E1 ?: U* V
specifications.1 W( @6 D( P- R6 p9 G% G
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9 ~- |$ R3 s: }6 h; j3 ZElectromagnetic InteRFerence and Electromagnetic Compatibility8 u/ O; D/ F5 l5 }1 I+ i4 j
Electromagnetic interference (EMI) is radio frequency energy that interferes with the operation of an5 a. f( G* q, B f7 Z' P0 ?/ }) P
electronic device. This radio frequency energy can be produced by the device itself or by other devices
+ w: @9 f3 D+ l( Z% b1 Inearby.
2 B% p& C; {! q5 o7 o# E- b2 PElectromagnetic compatibility (EMC) is the ability of an electronic product to operate without causing EMI+ r$ ?3 Q! @6 ^. d
that would interfere with other equipment and without being affected by EMI from other equipment or the4 s G" _! O Z# R
environment.. {/ t2 n( v p6 q; q5 p9 @; w
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发表于 2022-4-28 13:42
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